Brian helped found the Calorie Restriction Society International, and has been its president for over twenty years. He has published a book on calorie restriction and longevity, with Lisa Walford, The Longevity Diet, as well as numerous articles on aging and life-extension. He recently became president of the Society for Age Reversal in order to help advance research into very near-term solutions to the problem of aging, and to make existing treatments of age-related maladies more widely available.